Key-seating machine



UNITED STATES PATENT Crrrcu.

JOHN T. BURR, OF STAMFORD, CONNECTICUT.

KEY-SEATING MACHINE.

SPECIFICATION forming part of Letters Patent No. 319,953, dated June 16,1885.

Application filed November 6, 1882. (No model.)

To all whom it may concern.-

Be it known that I, JOHN T. BURR, a citizen of the United States,residing at Stamford, in the county of Fairfield and State ofConnecticut-have invented a new and useful Portable Key-Seating Machine,of which the following is a specification.

The object of my invention is the construe tion of a machine by whichkey-seats may be cut in shafting without removing the same from itsworking position. This machine, also, will be found to be exceedinglyuseful in constructing new work.

In the accompanying drawings, Figure 1 is a side elevation of the entiremachine. Fig. 2 is a plan or top view of same. Fig. 3 is a section ofpart of my machine taken on the line X Y, looking to the left; and Fig.4 is a section on the same line looking to the right.

Similar letters refer to similar parts throughout the several views.

A is a frame of cast-iron, which, with the binders A, forms a devicewith two eyesone on each endrigidlyconnected. The faces of the frame A,to which the binders Ajoin, as well as the faces of the bindersthemselves, are first planed, and then the holes for the bolts E E aredrilled and reamed. After the bolts E E, nicely fitted, are screwed upthe eyes are carefully bored out, and the sides of the rib C are planedparallel with a line drawn through the centers of the eyes. These eyesare each provided with four cup-pointed set-screws, located quartering,as shown. The parts B and B, when the faces are planed and boltedtogether by the studs S S and nuts H H, form a sleeve, which is boredinside to proper size. This sleeve is provided on each end with a set offour adjusting set-screws with rounded points. On the bottom of thissleeve a yoke, L, is cast to carry a flanged nut, M, and thejaw isfitted to easily slide over the rib C of the frame A. The studs S S, inaddition to holding the two parts B and B of the sleeve together, extendsome inches above the lug G, and are provided each with two checks-nuts,H H. A frame, K, has four holes drilled corresponding with and to fitover the four studs S S. This frame carries a spindle, P, to which isfastened by a nut the milling-cutter O. The

spindle P extends over one end of the framev K, and is fitted to take acrank or pulley to properly drive themilling-eutter. The sleeve, withframe K and milling-cutter, forms what I call the cutter-carriage. Thiscutter-carriage is moved in a right line between the eyes of the frame Aby means of a screw, N, which engages the nut M.

Having described the construction of my machine, I will now describe itsoperation.

' The shaft It, which is to be operated upon, is

supposed to be supported in its hangers. The caps A A are removed fromthe frame A, and the top B of the sleeve is also removed. The frame'A,with the lower part of the cutten-carriage, is now placed on the shaft,and the caps A A and the top B of the sleeve replaced and securelyfastened by the nuts. The eyes of the frame A are now brought in linewith the shaft, and when the shaft is eX- act-ly in the center theset-screws are firmly screwed against the shaft B. The cutter-carriageis next centered to the shaft Rby the setscrews F F. These screws arebrought to contact only with the shaft,and by their rounded pointsenable the cutter-carriage to move freely parallel to the shaft. Themilling-tool O, in its frame K, is next lowered by nuts H H to the depthrequired in the keyway while the spindle is being turned to out its Waydown. hen the proper depth is reached, the cutter-carriage is progressedby the screw N, until the keyway is cut as far as desired, parallelismwith the center of the shaft being obtained by the yoke IJ andguiding-rib C. Granting that the eyes of the frameA and the bore of thecutter-carriage are concentric with the shaft, it is evident that anabsolutely perfect keyway must be cut.

It is obvious that to cut keyways on shafts where no obstruction offersto slipping the whole machine over the end of the shaft, the parts A andB would not necessarily be removed. In fact, they could for such purposebe made solid, and not parted at all.

\Vhat I claim is- 1. In a key-seating machine, the combina tion of acutter-carriage inclosing and adapted to travel upon the shaft to betreated, an adjustable cutter or tool carried by said carriage, a guidefor said carriage, and the means for propelling the carriage along thesaid shaft, substantially as set forth.

2. In a key-seating machine, a cutter-carriage consisting of the parts BB, forming a sleeve adapted to receive the shaft to be key- Seated, anadjustable frame or plate, K, mounted upon said carriage, and a cutteror tool mounted upon the frame, in combination with a guide for thecarriage and the means for propelling said carriage along the shaft,substantially as set forth.

In a key-seating machine, a cutter-carriage consisting of the parts B B,forming a sleeve and adapted to receive the shaft to be key-seated, anadjustable frame, K, carried upon the carriage, and a tool, 0, mountedupon a shaft, P, journaled in the frame K, in combination with a guidefor the carriage and the means for propelling the same, substantially asdescribed.

4. The cutter-carriage consisting of the parts B B, forming a sleeve,the screws F,studbolts S, adjustable frame or plate K, millingtool 0,and shaft 1, substantially as and for the purpose specified.

5. The portable clamping-frame A, having its ends turned upward andsupplied with boxes A A, said frame having directly below the horizontalline of center through said boxes A A a guiding-rib, O, in combinationkey-seated, the adjustable frame or plate K,

mounted upon the carriage, the cutter 0, se cured in the frame K, theyoke L, nut M, and screw N, substantially as set forth.

7. In a key-seating machine, the combination of the cutter-carriageforming a sleeve adapted to inclose and travel upon the shaft to bekey-seated, an adjustable cutter or tool carried by said carriage, andthe means for propelling the carriage along the shaft, substantially asset forth.

JOHN T. BURR.

V i tn esses KATE S. BURR, J. STURGEs BURR.

